An invite icon consists of an envelope and a piece of paper that is coming out of the envelope. The envelope will be open so the flaps on the top will be lifted up to show the rectangular shape paper. The paper will also have information such as a plus sign on it.
This is the Invite icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.